Redo how Type objects are exposed from DDC.

tool/input_sdk/private/js_helper.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart._js_helper;
 
 import 'dart:collection';
 
 import 'dart:_foreign_helper' show
     JS,
@@ skipping 158 matching lines @@
   /// Returns the type of [object] as a string (including type arguments).
   ///
   /// In minified mode, uses the unminified names if available.
   static String objectTypeName(Object object) {
     return getRuntimeType(object).toString();
   }
 
   /// In minified mode, uses the unminified names if available.
   static String objectToString(Object object) {
     // String name = objectTypeName(object);
-    String name = JS('String', 'dart.typeName(dart.realRuntimeType(#))', object);
+    String name = JS('String', 'dart.typeName(dart.getReifiedType(#))', object);
     return "Instance of '$name'";
   }
 
   static int dateNow() => JS('int', r'Date.now()');
 
   static void initTicker() {
     if (timerFrequency != null) return;
     // Start with low-resolution. We overwrite the fields if we find better.
     timerFrequency = 1000;
     timerTicks = dateNow;
@@ skipping 598 matching lines @@
 
   SyncIterable(this._generator, this._args);
 
   // TODO(jmesserly): this should be [Symbol.iterator]() method. Unfortunately
   // we have no way of telling the compiler yet, so it will generate an extra
   // layer of indirection that wraps the SyncIterator.
   _jsIterator() => JS('', '#(...#)', _generator, _args);
 
   Iterator<E> get iterator => new SyncIterator<E>(_jsIterator());
 }